MP2321 Datasheet: Step-down Converter





MP2321 Step-down Converter Datasheet

Part Number MP2321
Description Step-down Converter
Manufacture MPS
Total Page 24 Pages
PDF Download Download MP2321 Datasheet PDF

Features: The Future of Analog IC Technology MP23 21 19V, 2A, 40µA IQ, High-Efficiency, Constant-On-Time, Step-Down Converter i n a QFN (2mmx3mm) Package DESCRIPTION The MP2321 is a fully-integrated, highe fficiency, synchronous, step-down, swit chmode converter with 40μA of quiescen t current. The MP2321 achieves 2A of co ntinuous output current over a wide inp ut supply range with excellent load and line regulation and can operate with h igh efficiency over a wide output curre nt load range. The MP2321 is optimized for battery-operated applications and a pplications requiring high light-load e fficiency. With constant-on-time (COT) control, the MP2321 provides very fast transient response, easy loop design, a nd very tight output regulation. Full p rotection features include short-circui t protection (SCP), over-current protec tion (OCP), under-voltage protection (U VP), and thermal shutdown. The MP2321 r equires a minimal number of readily ava ilable, standard, external components and is available in a space.

Keywords: MP2321, datasheet, pdf, MPS, Step-down, Converter, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute, Equivalent

The Future of Analog IC Technology
MP2321
19V, 2A, 40µA IQ, High-Efficiency,
Constant-On-Time, Step-Down Converter
in a QFN (2mmx3mm) Package
DESCRIPTION
The MP2321 is a fully-integrated, high-
efficiency, synchronous, step-down, switch-
mode converter with 40μA of quiescent current.
The MP2321 achieves 2A of continuous output
current over a wide input supply range with
excellent load and line regulation and can
operate with high efficiency over a wide output
current load range. The MP2321 is optimized
for battery-operated applications and
applications requiring high light-load efficiency.
With constant-on-time (COT) control, the
MP2321 provides very fast transient response,
easy loop design, and very tight output
regulation.
Full protection features include short-circuit
protection (SCP), over-current protection (OCP),
under-voltage protection (UVP), and thermal
shutdown.
The MP2321 requires a minimal number of
readily available, standard, external
components and is available in a space-saving
QFN-14 (2mmx3mm) package.
FEATURES
4V to 19V Operating Input Range
2A Output Current
40μA Quiescent Current
Output Adjustable from 0.6V
110m/40mHigh-Side/Low-Side RDS(ON)
for Internal Power MOSFETs
Power Good Indicator
Programmable Soft-Start Time
Forced PWM or Auto PFM/PWM Mode
Selectable
Programmable Switching Frequency
Thermal Shutdown
Short-Circuit Protection: Hiccup Mode
Available in a QFN-14 (2mmx3mm)
Package
APPLICATIONS
Tablet PCs
Solid State Drives
Gaming
Battery-Operated Applications
All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For
MPS green status, please visit the MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
100
90
80
70
60
50
40
30
20
10
0
0.001
0.01
0.1
1 10
MP2321 Rev. 1.1
5/24/2019
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
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